Deutsche Telekom Digital Labs React Js Frontend Developer Interview Questions and Answers

Round duration - 90 Minutes
Round difficulty - Easy

It was in in the evening at 5pm, it was simple with 20 mcqs on java,dbms,os.sql. And 2 coding questions.

Q1. 
Find Duplicates in an Array
Given an array ARR of size 'N', where each integer is in the range from 0 to N - 1, identify all elements that appear more than once.
Return the duplicate elements in any orde...read more
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Round duration - 45 Minutes
Round difficulty - Medium

It was afternoon.2 interviewers are present. What are forms and how to create forms in HTML? What are Entities and Relationships? What is an Alias in SQL?

Q1. 
Reverse the String Problem Statement
You are given a string STR which contains alphabets, numbers, and special characters. Your task is to reverse the string.
Example:
Input:
STR = "abcde"
Output:
"e...read more
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Q2. 
Implement Stack with Linked List
Your task is to implement a Stack data structure using a Singly Linked List.
Explanation:
Create a class named Stack which supports the following operations, each in O(1...read more
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